[yocto] Kernel config fragments are not applied

[Bruce Ashfield]

On 14-04-28 04:03 AM, Neuer User wrote:
> Hello
>
> I am trying to add a custom kernel config to my layer. I followed the
> following guide:
> http://www.yoctoproject.org/docs/1.6/dev-manual/dev-manual.html#creating-config-fragments
>
> I have the following files in my layer:
>
> recipes-kernel/linux/linux-cubox-i_3.0.35.bbappend:

The answer to your question depends on the base linux-cubox-i
recipe.

Config fragment support works for kernels that inherit from linux-yocto,
versus ones that inherit directly from kernel.bbclass. So if you
pop open that base recipe, and look for a reference to linux-yocto.inc,
you'll have the answer.

It is possible to bbappend the linux-yocto support into the kernel
recipe via your layer, and might be worth a try.

The separation between the two classes exists to not break compatibility
with existing kernel recipes, or change long standing oe workflow with
the existing classes.

Cheers,

Bruce

>
> FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}-${PV}:"
>
> inherit kernel
> COMPATIBLE_MACHINE_cubox-i = "(cubox-i)"
>
> SRC_URI += "file://videoin.cfg"
>
>
> recipes-kernel/linux/linux-cubox-i-3.0.35/videoin.cfg:
>
> CONFIG_VIDEOBUF_VMALLOC=y
> CONFIG_VIDEO_TVEEPROM=y
> CONFIG_VIDEO_TUNER=y
> CONFIG_VIDEO_ADV7180=y
> CONFIG_VIDEO_MXC_CAMERA=y
> CONFIG_MXC_TVIN_ADV7180=y
> CONFIG_USB_VIDEO_CLASS=y
> CONFIG_USB_GSPCA=y
> CONFIG_USB_M5602=y
> CONFIG_USB_STV06XX=y
> ...
>
> The layer is included in conf/bblayers.conf. The file videoin.cfg is
> found and "installed" in the correct tmp/work directory. However the
> config is never added to the kernel config file.
>
> What am I doing wrong?
>
> I use Yocto "master-next", cubox-i4pro.
>
> Thanks
>
> Michael
>